GB1280289A - Screening cage for a deflection coil - Google Patents
Screening cage for a deflection coilInfo
- Publication number
- GB1280289A GB1280289A GB21812/71A GB2181271A GB1280289A GB 1280289 A GB1280289 A GB 1280289A GB 21812/71 A GB21812/71 A GB 21812/71A GB 2181271 A GB2181271 A GB 2181271A GB 1280289 A GB1280289 A GB 1280289A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conductors
- opposite ends
- earthed
- conductor
- helical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/867—Means associated with the outside of the vessel for shielding, e.g. magnetic shields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Details Of Television Scanning (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
1280289 Electron beam deflecting apparatus PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [18 Feb 1970] 21812/71 Heading H1D An electrostatic screen for use between the line and field deflection coils of a camera tube, comprises at least two interleaved helical conductors. In Fig. 1 the helical conductors 3 and 5 are earthed at opposite ends 9 and 15 respectively either directly at 11 and 17 or via a prolongation 19 of the conductor 3; the opposite ends of the conductors are free, in order to avoid a magnetic short-circuit, but are effectively earthed at high frequencies through their capacity to the other conductor. The conductors may be embedded in a former on which one of the deflecting coils is wound. In a modification, Fig. 2 (not shown), there are four helical conductors, adjacent ones being earthed at opposite ends. The conductors may be insulated wires.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7002232A NL7002232A (en) | 1970-02-18 | 1970-02-18 | |
| US11045771A | 1971-01-28 | 1971-01-28 | |
| US00252938A US3824515A (en) | 1970-02-18 | 1972-05-12 | Screening cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1280289A true GB1280289A (en) | 1972-07-05 |
Family
ID=27351544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21812/71A Expired GB1280289A (en) | 1970-02-18 | 1971-04-19 | Screening cage for a deflection coil |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3824515A (en) |
| DE (1) | DE2104221C3 (en) |
| FR (1) | FR2078768A5 (en) |
| GB (1) | GB1280289A (en) |
| NL (1) | NL7002232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1416635A2 (en) * | 2002-11-01 | 2004-05-06 | Omron Corporation | Sensor device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4152745A (en) * | 1977-04-11 | 1979-05-01 | Eul Edward A | Magnetic shield device |
| US4392083A (en) * | 1981-11-20 | 1983-07-05 | Teletype Corporation | Radiation shield for a cathode ray tube |
| KR900001503B1 (en) * | 1985-09-13 | 1990-03-12 | 미쓰비시전기 주식회사 | Radiation suppression device |
| JPS63144505A (en) * | 1986-12-09 | 1988-06-16 | Mitsubishi Electric Corp | Magnetic field leakage canceling device |
| US4767969A (en) * | 1987-05-26 | 1988-08-30 | Honeywell, Inc. | RF emission shield for CRT displays |
| US6297583B1 (en) * | 1998-10-08 | 2001-10-02 | Federal-Mogul World Wide, Inc. | Gas discharge lamp assembly with improved r.f. shielding |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE427739A (en) * | 1937-04-26 | |||
| US2754415A (en) * | 1950-10-09 | 1956-07-10 | Du Mont Allen B Lab Inc | Receiver antenna coupling circuit for balanced or unbalanced input |
| DE1095313B (en) * | 1957-01-04 | 1960-12-22 | Fernseh Gmbh | Deflection coil assembly for television pick-up tubes of the vidicon type |
| US3158774A (en) * | 1962-06-08 | 1964-11-24 | Joel F Fleming | Image orthicon focusing coil and field flaring ring |
-
1970
- 1970-02-18 NL NL7002232A patent/NL7002232A/xx unknown
-
1971
- 1971-01-29 DE DE2104221A patent/DE2104221C3/en not_active Expired
- 1971-02-18 FR FR7105548A patent/FR2078768A5/fr not_active Expired
- 1971-04-19 GB GB21812/71A patent/GB1280289A/en not_active Expired
-
1972
- 1972-05-12 US US00252938A patent/US3824515A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1416635A2 (en) * | 2002-11-01 | 2004-05-06 | Omron Corporation | Sensor device |
| EP1416635A3 (en) * | 2002-11-01 | 2006-05-24 | Omron Corporation | Sensor device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2078768A5 (en) | 1971-11-05 |
| DE2104221B2 (en) | 1979-08-30 |
| NL7002232A (en) | 1971-08-20 |
| DE2104221C3 (en) | 1980-07-17 |
| DE2104221A1 (en) | 1971-08-26 |
| US3824515A (en) | 1974-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |